Automatic saw-tooth-setting machine.



G. 8. TUFENKJIAN.

AUTOMATIC SAW TOOTH SETTING moamn.

APPLIUATION FILED JUNE 26,1908. 6.

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G. S. TUPENKJIAN. AUTOMATIC SAW TOOTH SETTING MACHINE.

. APPLICATION PILBD TUNE 28,1908. Patented 6.

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G. S. TUPENKJIAN.

AUTOMATIC SAW TOOTH SETTING MACHINE.

APBLIUATIQN FILED 1:11.326, 1903. 6' 4 SHEETS-SHEET 3.

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G. S. TUFENKJIAN. AUTOMATIC SAW TOOTH SETTING momma.

APPLICATION FILED JUNE 26, 190B.

Patented July 6. 1909. 4 SHEETS-SHEET 4.

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(,ROSS S. TUFENKJIAN, OF PLATTSBURG, NEW YORK.

AUTOMATIC SAW-TOOTH-SETTING MACHINE.

Specification of Letters Patent.

Patented July 6, 1909.

Application filed June 26, 1908. Serial No. 440,522.

To all whom it may concern:

Be it known that I, Guess S. TUFENKJIA N, a citizen of Turkey, Armenia,residing at Plattsburg, in the county of Clinton, State of New York,have invented certain new and useful lm rovements in Automatic Saw-Tooth-Settmg Machines; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to machines for automatically settin the teeth ofsaws, and has for one of its 0 jects to simplify and improve theconstruction of devices of this character.

Another object of the invention is to rovide a simply constructed deviceof this 0 aracter wherein the teeth are set by the blo W of a hammerspring actuated, and with means whereby the force of the blow may becontrolled.

Another object of the invention is to provide a machine of thischaracter wherein mechanically o erated means are provided forautomatica y moving the saw step by step to bring the teeth one afterthe other in position to be acted upon by the setting implement.

Another object of the invention is to provide a machine of thischaracter wherein automatically, operated means are provided for movingthe saw step by step past the setting implement and which are reversiblein position so as to move the saw in either direction.

Another object of the invention is to provide a machine of thischaracter wherein. the length of the stroke whereby the saw is moved isadapted to be adjusted to correspond to the sizes of the teeth, so thatsaws with diflerent sizes of teeth may be acted upon b the machine.

Anot er object of the invention is to provide a machine of thischaracter wherein the saw setting mechanism and the saw moving mechanismare actuated by one stroke of a lever. With these and other ob'ects inview the invention consists in general in a spring actuated saw settingmember and a saw moving member operative by one movement of a lever.

The invention further consists in a setting or striking member springactuated, devices for intermittently engagin the teeth of the saw, anoperating lever, wit means whereby the operatin lever elevates thestriking member and ikewise actuates the intermittent saw movingmechanism so that the striking member and the saw moving mechanism areoperated by one stroke of the lever.

The invention further consists in a striking member spring actuated, twoalternately o crating saw moving devices adapted to lie independentlyadjusted into and out of the path of the saw, and an operatin leveradapted to actuate the striking mec anism and the saW moving mechanism.

The invention further consists in certain novel features of constructionas hereafter shown and described and s ecificall pointed out in theclaims, and in t e drawings illustrative of the preferred embodiment ofthe invention, Figure 1 is a side elevation of the improved device. Fig.2 is a front elevation. Fig. 8 is a plan view. Fi 4 is a longitudinalsectional elevation. Tig. 5 is a sectional detail enlarged of the inneror latch end of the operating lever. Fig. 6 is a perspective detailpartly in section of one of t e saw tooth actuating pawl devices.

In setting the teeth of saws by hand, or b r manually operated devices were dependence is had u on the judgment of the operator to contro theforce of the blow or the ressure applied, it is very diflicult toproduce uniform action, the result being that the teeth are irre ularlyset, and the saw caused to run w en operated, and the imroved deviceherein shown and described is esigned to apply precisely the samepressure or force to the setting mechanism at each 0 oration so that theset of the teeth will e uniform and regular.

The improved device comprises a base plate 10 ot any required size andpreferably mounted u on a block 11 having a projection 12 from its owerside to enable the improved device to be supported in a vise or otherholding means, but 1t will be understood that the invention is notnecessarily limited to the manner in which the base 10 is supported, andif preferred ma be attached to a ermanent support suc as a bench or theike.

Rising from the base 10 is a standard 13 having an overhanging portion14 provided with a longitudinal bore 15, and externally threaded at 16.The standard 13 is also provided with a projecting in 17 having avertical bearing aperture 1n a inement with the bore 15.

Operating through the lug 17 is a die member 18 having its lower end 19formed to correspond with one of the teeth of the saw which is to beset, the die 18 terminating at its 11 per end in an enlargement 20 fromwhic a stem 21 extends upwardly through the bore 15 and above the upperend of the threaded portion 16. The enlargement 20 bears normally uponthe lug 17.

Fittin over the threaded portion 16 of the standarr 13 is a cap 22internally threaded and engaging the threads 16 of the standard, withthe stem 21 extending slidably through the cap 22. Surrounding the stem21 within the cap 22 and the bore 15 is a spring, or a plurality ofsprings 23, the upper whirl of the spring bearing beneath the ca 22 andthe lower whirl bearing upon the en argement 20, the spring or springsthus operating to maintain the ie 18 in its lower position, as shown.

Secured upon the base 10 beneath the die 18 is an anvil 24 preferablysecured in place by a clamp screw 25 fitting through the bottom of thebase 10. The angular terminal 19 of the die 18 rests upon this anvil asshown. Extending throu h the enlargement 20 is a pin 26 with w ich thedie and stem elevating mechanism connects as hereafter explained. Thestandard 13 is formed with a guide-way 77 through which the pin 26pro'ects so that the die and stem are prevente from rotationhorizontally while bein actuated.

ivoted at 27 to the standard 1.3 is an operating lever 28, the inner orshorter end of the lever having an angular latch member 29 pivotedtherein at 30, one arm of the latch member projecting into the path ofthe pin 26, While the other arm of the latch device is connected by aspring 31 whereby the latch device is returned to its operative positionwhen released.

'11 sprin 74 is connected at to the standard 13 an at 76 to the lever 28and o crating to maintain the outer or longer end Otl16 operating leveryieldably in its upward position, and return it to that sitionautomatically after each tripping o the said mechanism, as hereafterexplained.

By this arrangement it will be obvious that when the long arm of thelever 28 is depressed the latch device 30 will engage the pin 26 andelevate the stem 21 and the die 18, and when the depression of thelonger arm of the lever 28 has reached a certain point the outer end ofthe latch device will pass the pin 26 and release the stem and die andpermit the spring 23 to forcibly depress the die upon the tooth of a sawresting upon the anvil 24, as hereafter explained.

Engagin the lever 28 by a pin 32 is a bar 33 preferab y passing throughan aperture in the base 10 and provided with a sto pin 34 below the baseto limit the upwar movement of the lever. The arm 33 is provided withnumerous spaced apertures 35 so that the pin 32 may be set higher orlower to control the movement ol the lever 28, the apertures enablingthe pin to be adjusted to change the throw of the lever.

Swingingly cou )led to the base 10 at 36-37 are two bel crank or shipperlevers 38 39, the forward ends of the levers 38--39 being cut away at4() 41 to permit the attachment of the su porting members 42 43 carryingthe paw s 44-45 by which the teeth of the saw are engaged as hereafterexplained, the pawls fitting in sockets in the members 42-43 andmaintained yieldably in their outward positions by sprin rs one of whichis represented at 46. The paw s 44-45 are prevented from rotating bytransverse pins engaging flattened portions on the inner ends of thepawls, one of the pins being shown at 47 and one of the flattenedportions being 1" shown at 48. The members 42 43 are provided withupwardly projecting lugs 4950 having threaded apertures to receiveadjusting screws 51-52, the inner ends of the latter bearing against theopposite sides of the standard 13, as shown. The members 4243 arelikewise rovided with longitudinal slots one of whidh is indicated at 53and through which clamp screws 5455 extend and tapped into the adjacentportion of the members 3839, the clamp screws serving as a means foradjustably connecting the members 4243 to the members 38-39 and likewisepermitting either one of the members 42-43 to be swung no out of the waywhen not required so that t e saw may be moved to the right or left, ashereafter more fully ex laine he inner ends of the members 38 39 arecoupled by a late 56 having slots in its ends through whie clamp screws5758 are disposed, the slots permitting the free move ment of theshipper levers. The plate 56 is provided with an upwardly extendedportion 59, and rigidly connected to this latter portion is a cam memberhaving an upper member 60 curving toward the standard 13 and preferablygrooved in its rear face and with a horizontally extended portion 61bearing upon the upper face of the base 10 and operating through akeeper 62 attached to the base, as shown. The member 60-61 is thusslidable upon the base 10. The inner portions of the members 3839 areconnected by a spring 63, which operates to maintain the inner ends ofthe members 3839 which carry the pawls 4445 yieldably in their inwardpositions. By this arrangement it will be obvious that pressure ap liedto the cam member 6061 will force t e outer ends of the members 3839inwardly or toward the standard 13, and distend the outer ends againstthe action of the spring 63, and when the pressure is removed from thecam member the spring will immediately and automatically return themembers 38-39 to their normal positions.

Fitting through the member 33 is a threaded stud 64 having a roundedinner end 65 adapted to engage the curved portion 60 of the cam memberand thus force the latter inwardly toward the standard 13 when theoperating lever 28 is depressed, and thus actuate the members 3839 aspreviously described.

Attached to the base 10 adjacent to the lower end of the standard 13 aretwo gage devices comprising upwardly extended portions 66-67 andhorizontal portions 6869, the latter having longitudinal slots 7()71engaged respectively by clamp screws 7 2-73 tapped into the base 10 sothat the upwardly extending portion 6667 may be adjusted toward or awayfrom the standard. These gage devices are designed to control theposition of the saw relative to the anvil 24, as hereafter explained.

With a device thus constructed, the operation is as follows :Preierablythe member 42 is released by turning the screw 54 backwardly anddisposing the member 42 in a vertical position so that its pawl 44 isremoved from the path of the saw, while the member 43 is adjusted sothat its pawl 45 will engage in the path of the saw teeth. It is obviousthat by means of the longitudinal slot in the member 43 and the setscrew 55 the pawl may be adjusted to any required extent relative to thesaw, and by likewise adjusting the gage devices 6667 the amount ofproection of the saw teeth over the anvil may likewise be controlled,the members 6667 being set to correspond with the depth of the teeth, afine tooth saw requiring that the gages shall be adjusted outwardly to agreater extent than for a coarse toothed saw, as will be obvious. Itwill also be obvious that by adjusting the pin 32 relative to the member33 by disposing it in one or the other of the apertures 35, the throw ofthe member 33 may be controlled and the action of the screw 64 upon thecam surface 60 likewise controlled, so that the extent of the movementof the shipper lev s 38--39 may be correspondingly controller toregulate the distance which the pawl 45 moves toward or away from thestandard 13. It will thus be obvious that the pawl 45 may be adjusted tomove the saw to any required extent, this adjustment being dependentupon the pitch of the teeth. The adjusting screw 52 bearing against theadjacent face of the standard 13 likewise performs an important functionin securing the required adjustment. The diflerent portions of theapparatus having been pro erly adjusted the saw is disposed with its rsttooth upon the anvil 24 and the lever 28 de ressed causing the latch 29to engage the pin 26 and elevate the die 18 against the action of thespring 23, and when the depression of the lever 28 has proceeded l'arenough to cause the latch 29 to witl'idraw from beneath the pin 26 thespring 23 will l'orciblv throw the die 18 downward upon the tooth of thesaw and set the same. The spring 74 then returns the lever 28 to itsformer position ready for another movement. In the meantime, thedepression of the lever 28 has likewise caused the adjusting screw 64 toengage the cam device 61 and has operated the shipper levers 38--39 andcaused the pawl 45 to engage one of the teeth of the saw and move thesaw over the anvil the distance. of two teeth or sufficiently to bringthe next tooth in position. beneath the die. The operation is thusautomatic, the operator being simply required to maintain the saw withthe teeth at the opposite sides of the die in engagement with the gagedevices 66*67. After each alternate tooth of the saw has been set asabove described, the member 43 is released and turned with its pawl outof the path of the saw teeth, while the member 42 is adjusted with itspawl in the path of the saw teeth and the saw reversed in position andarranged with the first unset tooth in position upon the anvil, and thenat the continued operation of the lever 28,

the remaining alternate teeth of the saw L will be successively set aswill be obvious.

The device is simple in construction, can be inexpensively manufactured,and adjusted to fit the teeth of saws of various sizes, and thus adaptthe device to the work re uired of it.

he parts of the device are strong and durable, and not liable to get outof order and adapted to withstand the severe strains to which devices ofthis character will be subjected.

By adjusting the cap 22 it will be obvious that the tension of thespring 23 may he altered as required to adapt the device to saws ofvarious thicknesses, thicker saws requiring a heavier blow than thethinner saw blades, as will be obvious.

The operating lever 28 may be actuated in any suitable manner, but willpreferably be operated by a foot treadle so that the operator will haveboth hands free to handle the saw.

An improved form of the foot treadle mechanism is shown comprising abase 80 having a U shaped member 81 connected thereto and between whichthe treadle R2 is mounted to swing u on pivots 83, the free end of thetreadle eing connected to the outer end of the lever 28 by a pull cable85.

What is claimed, is

1. A device of the class described comprising an anvil, a sup ort for asaw, a die, means for actuating t e same including an o' eratin lever,two oppositely arranged slipper evers coupled at their rear ends,

pawls at the ends of said shipper levers and extending into the path ofa saw held upon said support, means for allowing said pawls to bewithdrawn from the path of the saw, a cam member carried by said shipperlevers at their junctures, and a trip member carried by said operatinglever and engaging with said cam member to actuate the shipper levers,when the operating lever is depressed.

2. A device of the class described comprising a base, an anvil carriedby said base,

a standard rising from said base, a die carried by said standard, meansfor actuating said die, two ship or levers swinging upon said base,means or con ling said shi per levers at one end, )awl evices carrie bysaid levers at their l ree ends and adapted to be projected into thepath of the teeth of a saw bearing upon the anvil, an operating lever,and means carried by the operating lever and engaging the coupling meansof said shipper levers to simultaneously actuate the same.

3. A device of the class described comprising a base, an anvil carriedby said base, a standard rising from said base, a die carried by saidstandard, an operating lever swinging from said standard, means wherebysaid lever is caused to actuate said die, two shi per levers swingingupon said base, means flir coupling said shipper levers at one end, pawldevices carried y said shipper levers at their free ends and ada ted tobe rejected into the path of the teet of a saw bearing 11 on the anvil,a curved cam device connected to said lever coupling, and a studextending from said lever into the path of said cam device.

4. A device of the class described comprising a base, an anvil carriedby said base, a standard rising from said base, a die carried by saidstandard, an operating lever swinging from said standard, means wherebysaid lever is caused to actuate said die, two shipper levers swingingfrom said base, means carried by said shipper levers at one end forengaging the teeth of a saw bearing upon said anvil, a guide devicecarried by said base between said ship er levers, a member slidable insaid guide evice, means to said shi per levers, and means whereby saidslidab e member is actuated by the depression of said operating lever.

5. A device of the class described comprising a base, an anvil carriedby said base, a standard rising from said base, a die cari ried saidstandard, an operating lever j swinging from said standard, meanswhereby said lever is caused to actuate said die, I two shipper leversswinging u on said base, i a pawl swinging from one end of each shipperlever and adapted to be projected into the path of the teeth of a sawbearing u on said anvil, a guide device between said s i per levers, amember slidable upon sald guide device, means for coupling said slidablemember to said. shi per levers, a cam device carried by said slic ablemember, and a stud carried by said operating lever and extending forengagement with said cam device when the operating lever is depressed.

6. A device of the class described comprising a base, an anvil carriedby said base, a standard rising from said base, a die carried by saidstandard, an operating lever swinging from said standard, means wherebysaid lever is caused to actuate said die, two shipper levers swingingupon said base, a pawl swinging from one end of each ship er lever andadapted to be projected into the path of the teeth of a saw bearing uponsaid anvil, a guide device, a member slidable upon said uide device,means for coupling said slidab e member to said shi per levers, a camdevice carried by said sli able member, a stud carried by said operatinlever and extendin for engagement wit said cam device w en the operatinglever is depressed, and a rod dependin from said stud, and stop carriedby said ro and ada ted to engage said base when the operating ever iselevated to limit the upward movement thereof.

In testimony whereof, I afiix my signature, in presence of twowitnesses.

CROSS S. TUFENKJIAN.

j for movably coupling said slidable member F l Witnesses:

HENRY E. BARNARD, ANDREW MoKEErE.

